LeoTrio LRGB 2013-02-07

[fwm891]

Busy night last night. Another offerring: an LRGB 7x300s (L), 6x300s each (RGB) channels. Equipment as in sig. The individual channel subs were stacked in AA5 with some processing in AA5. Then combined as LRGB in PS.

Have more lumin and Ha data on another HD which I will bring into this image at some stage.

[Tom OD]

Nice job. I think it'll need some more colour data though. Is that background dust in the image. I have never noticed it before in Leo triplet images. Great job for capturing that.

Tom

[fwm891]

Thanks Tom, I have to admit that I find 'colour content' of DSO's difficult. I don't like over saturated colour probably because most of the objects that are bright enough to exhibit colour do so in a muted kind of way - if that makes sense?

Colour data was binned 2x2 and the Lumin subs all 1x1. so the colour data was rescaled to match the lumin subs which probably degraded it further.

As for dust - I suspect its more to do with my processing

[Gina]

Very nice Francis I'm finding colour difficult with a mono CCD too. Think I'm beginning to like monochrome

[Tom OD]

With colour I do not bin anymore. I found I got weird pink and purple colour stars. I try to take a bit more RGB than Lum. So maybe 4 hours Lum matched with 6 RGB. Something like that. I think you need to anyway to balance out the noise. Colour will get noisey quickly in processing so might as well get more of it than the Lum.

T.

[3ggman]

Very well capture Francis, well done.

[fwm891]

Thanks all. Looks like a long wait now before I can get more data....

[fwm891]

Added another hour of lumin data from last year. Its left me with quite an odd gradient but overall a bit better?

[Gina]

Yes, a further improvement Francis

[andyo]

Nice images the second is certainly better less noisey great job

[fwm891]

Thanks Gina & andyo, Last effort on this, played with Gradient Xterminator and reduced the background unevenness, tweaked the saturation and levels - image looks best reversed as there are loads of faint background galaxy's, some are visible in the normal view.

[andyo]

Yes thats better again,Gradient xterminator is a nice bit of software